What are plicae in the knee?

Plicae in the knee refer to extensions of the synovial membrane that can present in specific regions of the joint. These structures are believed to be remnants of embryonic development and can sometimes result in discomfort or pain, especially if they become inflamed or impinged during joint movement.

In functional terms, while they are normal anatomical structures, they can contribute to conditions such as plica syndrome, where the plicae can irritate surrounding tissues due to excessive friction or trauma, leading to knee pain. The existence of plicae serves as a reminder of the dynamic nature of synovial joints and how various anatomical elements are not only involved in stability and movement but can also become sources of pain under certain conditions.

Understanding the role of plicae can help physical therapists develop treatment strategies for patients experiencing knee pain, clarifying the importance of evaluation and intervention tailored to such anatomical considerations.